Which of these statements is not necessarily true for two objects in thermal equilibrium? question 2 options: the objects' temperatures are not changing. the objects are made of tiny particles that are moving at the same rate. the objects' temperatures have both changed by the same amount. the objects have the same temperature.

The energy equivalent of the rest mass of an electron is

Avector of magnitude 2 cannot be added to a vector of magnitude 3 so that the magnitude of the resultant is a. zero b. 1 c. 3 d. 5 e. 7

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc